We have been very happy with our 2015 Lance 1985. I've been all over and all through this thing and I was very impressed with the quality difference between this and other trailers we considered. My opinion (for what it's worth) it's head and shoulders above those we looked at (including Jayco).
Having said that, I'll offer up two things. First, just like there are Chevy people and Ford people and each can be fiercely loyal and biased, trailer people are much the same. It's important to solicit the opinion of the loyalist because they'll know things about their favorite trailer make that non owners won't know or consider. So listen to all.
The second thing is that your opinion will matter the most. These things are all more or less mass produced grabbing pre-cut, pre-assembled stuff off the shelf and put together. Listen to all, but the most important thing you can do is carry a flashlight and be prepared to crawl into every reachable nook and cranky. Both as you are shopping and before you take delivery. Be sure to satisfy yourself that all is right.